[1]HE Yun,YANG Aijiang,CHEN Weijie,et al.Research on Spatial Characteristics and the Load of Agricultural Non-Point Source Pollution in Karst Area of Southwestern China[J].Research of Soil and Water Conservation,2022,29(01):148-152.
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Research on Spatial Characteristics and the Load of Agricultural Non-Point Source Pollution in Karst Area of Southwestern China
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 01
Page number:
148-152
Column:
Public date:
2022-02-20
- Title:
- Research on Spatial Characteristics and the Load of Agricultural Non-Point Source Pollution in Karst Area of Southwestern China
- CLC:
- X522
- DOI:
- -
- Abstract:
- In order to more accurately estimate the current status of agricultural non-point source pollution(ANSP)in the Beipan River Basin(Qinglong Section)located in southwestern China, an improved export coefficient model(IECM)was developed by integrating the precipitation and terrain impact factor into the conventional export coefficient model. The results indicated that the loads of TN and TP of the agricultural non-point source pollutants in the research area in 2017 were 2 582.00 t and 246.74 t, respectively; the distribution characteristics of the two are basically the same, showing the characteristics of uneven distribution: Pollution load is locally concentrated. And then, the load is higher in areas with higher slopes and high population densities; the contribution rates of different ANSP to TN and TP loads provided the similar trend and deceased in the order: livestock>land use>rural life; compared with the actual observations, the average relative deviations of the IECM estimates of TN and TP loads were 9.80% and 2.09%, respectively, which indicated that the IECM improved the accuracy of model simulation and provided reference information of model selection for the estimation of ANSP in the karst area ofsouthwestern China.
- References:
- [1] 张亚尼,李泽利,邓小文,等.沙河流域非点源溶解态氮负荷模拟及源解析[J].水土保持研究,2017,24(5):352-356.[2] Johnes P J. Evaluation and management of the impact of land use change on the nitrogen and phosphorus load delivered to surface waters:the export coefficient modelling approach[J]. Journal of Hydrology, 1996,183(3/4):323-349.[3] 丁晓雯,沈珍瑶,刘瑞民,等.基于降雨和地形特征的输出系数模型改进及精度分析[J].长江流域资源与环境,2008,17(2):306-309.[4] 蔡明,李怀恩,庄咏涛,等.改进的输出系数法在流域非点源污染负荷估算中的应用[J].水利学报,2004,7(6):40-45.[5] Ding X, Shen Z, Hong Q, et al. Development and test of the export coefficient model in the upper reach of the Yangtze River[J]. Journal of Hydrology, 2010,383(3/4):233-244.[6] 任玮,代超,郭怀成.基于改进输出系数模型的云南宝象河流域非点源污染负荷估算[J].中国环境科学,2015,35(8):2400-2408.[7] 覃自阳,何丙辉,甘凤玲.模拟降雨下重庆喀斯特槽谷区径流氮磷元素流失特征[J].中国农业大学学报,2021,26(5):129-140.[8] 凡非得,王克林,熊鹰,等.西南喀斯特区域水土流失敏感性评价及其空间分异特征[J].生态学报,2011,31(21):6353-6362.[9] 彭文君,舒英格.基于GIS的石漠化山区县域土地利用空间变化的生态风险测度[J].水土保持研究,2018,025(1):342-348,355.[10] 史迎春,舒英格.喀斯特石漠化时空变化特征及驱动因子分析:以贵州晴隆县为例[J].林业资源管理,2017,000(1):135-143,152.[11] 黄国如,陈晓丽,任秀文.北江飞来峡库区典型流域非点源污染特征分析及模拟[J].水资源保护,2019,035(4):9-16.[12] 林明,丁晓雯,卢博鑫.降雨,地形对非点源污染产输影响机理综述[J].环境工程,2015,33(6):19-23.[13] Shen Z, Chen L, Ding X, et al. Long-term variation(1960—2003)and causal factors of non-point-source nitrogen and phosphorus in the upper reach of the Yangtze River[J]. Journal of Hazardous Materials, 2013,252:45-56.[14] 胡富昶,敖天其,胡正,等.改进的输出系数模型在射洪县的非点源污染应用研究[J].中国农村水利水电,2019(6):78-82.[15] Chen X, Liu X, Peng W, et al. Non-point source nitrogen and phosphorus assessment and management plan with an improved method in data-poor regions[J]. Water, 2018,10(1):17.https://doi.org/10.3390/w10010017.[16] 马欣敏.基于GIS的区域降雨量时空分析及空间插值方法研究[D].昆明:昆明理工大学,2016.[17] 丁洋,赵进勇,董飞,等.妫水河流域农业非点源污染负荷估算与分析[J].水利水电技术,2020,51(1):139-146.[18] 张昊天,周忠发,刘贤梅,等.基于GIS的红枫湖流域平坝区境内农业非点源污染估算[J].环境工程,2019,37(3):174-179.[19] 李政道,刘鸿雁,姜畅,等.基于输出系数模型的红枫湖保护区非点源污染负荷研究[J].水土保持通报,2020,40(2):193-198.
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2022-02-20